Hackaday editors Mike Szczys and Elliot Williams take a look at all the hacks from the week that was. We think we've found the perfect tentacle robot, and the controller for it is fittingly also a tentacle. An unrelated project uses the same bowden cable trick as the tentacle controller to measure deflection. If you're more of a material-science geek, refining black sand to make your own inductors is a fascinating hack. And we wrap up the episode talking SSH keys and buses that go off road, but not in the way you might think. Show notes: https://hackaday.com/?p=432406